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TRG-TRC001-EN 55
period seven
Review
notes
The resulting psychrometric chart plot represents the changes that a volume of
air undergoes as it travels through a typical air conditioning system.
In this illustration, recirculated air A is mixed with outdoor air B, producing a
mixed air condition C.
This air mixture passes through the cooling and dehumidifying coil, with the
changes in dry-bulb temperature and humidity ratio represented by the coil
curve from C to D.
This supply air D enters the room and mixes with the room air along the SHR
line from D to A, absorbing the room’s sensible and latent heat gains, to
maintain the room at desired conditions A.
Again, for this specific supply air condition, a specific airflow is required to
maintain the desired room conditions.
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Figure 88